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ASUS Xonar D2/X Sound Card Details
We first broke the news about ASUS making sound cards over at CeBIT and DigiTimes followed up with an article yesterday stating Xonar D2X is using CMedia sound chips instead of ADI we initially heard. If that the case, Xonar D2/X is most probably based off C-Media Oxygen HD CMI8788 sound chip according to the specs we seen.
ASUS Xonar sound cards are primarily targeted at Gamers as well as Music and Digital Home users. There are two versions of cards but with the same specs; Xonar D2 is PCI based while D2X is PCI Express based. Xonar D2/X supports 192K/24-bit with 118dB SNR for playback and 115dB SNR for recording. It supports HW accelerated EAX 2.0 and OpenAL under Windows XP but not Windows Vista since Hardware Abstraction Layer (HAL) is removed. Without that, games using DirectSound3D will be rendered in software mode without EAX. It doesn't affect new game titles since most of them run on OpenAL. Creative faced the same problem with their X-Fi sound cards therefore they have a ongoing ALchemy project to convert EAX into OpenAL so perhaps CMedia or ASUS can follow suit.
Other features include supports for Dolby Digital Live and DTS Connect to convert gaming audio into Dolby Digital & DTS 5.1 channels surround signal for Home Theater systems. It also supports Dolby Headphone and Dolby Virtual Speaker to provide 3D sound positioning over headphones and speakers. ASUS promises they will provide constantly updated drivers on both XP and Vista to the consumers. ASUS plans to ship 500K Xonar D2X sound cards in 2007.
Source>> http://www.vr-zone.com/index.php?i=4860
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